Effortless Installation: This top post battery disconnect switch requires no additional parts for installation. It connects directly to your battery's top post, allowing for quick power cut-off and system security. Ideal for both novices and seasoned DIY enthusiasts. Durable and Safe: Made from robust plastic with copper connectors, this battery shut off switch is built to last. It effectively resists and prevents accidental short circuits, ensuring reliable performance for daily use. Versatile ON/OFF Control: Offers reliable control with 250 amps for regular operation and 1000 amps for starting power. Compatible with 12-48V batteries. Suitable for a wide range of vehicles including cars, RVs, and boats. Universal Compatibility: Designed to fit most standard top post batteries (15.5-17mm for negative terminal). A versatile solution for battery protection across various vehicle types such as cars, trucks, RVs, and boats. Note: The actual product may have slight color variations, which do not affect functionality. Color: Red + Black Material: Brass + Plastic Package Contents: 1 x Top post battery disconnect switch (Only the above package content; other products are not included) Note: Light reflection and different display settings may cause the color of the item in the picture to appear slightly different from the real thing. Measurement may vary by +/- 1-3 cm.